Basketball hoop and backboard (Great Linford MK14)

Very old (20+ years) but still perfectly good condition
Needs a little cleaning and maybe the basket net given a wash
Requires 4 expanding bolts or similar to attach to, in my case, an external wall - roughly 80mm to 100mm in length and size M8 or M10, both of which can be easily found on Amazon for £4 to £5 - I've added a screenshot of an example bolt